Fix input pane usage on Windows 10 IoT Core

Running on Raspberry Pi casting to IInputPane2 fails with E_NO_INTERFACE
as there is no input pane available for the device.
However, if E_NO_INTERFACE is returned from the lambda, then deletion of
the ComPtr holding the AsyncAction in runOnXamlThread() crashes
somewhere deep internally of Release().

As we do not check for the return value anywhere, avoid the crash by
returning S_OK instead.

Change-Id: Icd38ec482b365285a482e5ff792ec1b4f13317d5
Reviewed-by: Andrew Knight <andrew.knight@intopalo.com>
Reviewed-by: Laszlo Agocs <laszlo.agocs@theqtcompany.com>

1 files changed, 4 insertions, 4 deletions

diff --git a/src/plugins/platforms/winrt/qwinrtinputcontext.cpp b/src/plugins/platforms/winrt/qwinrtinputcontext.cpp
index a0474b6710..9228ef8d62 100644
--- a/src/plugins/platforms/winrt/qwinrtinputcontext.cpp
+++ b/src/plugins/platforms/winrt/qwinrtinputcontext.cpp
@@ -169,12 +169,12 @@ void QWinRTInputContext::showInputPanel()
         ComPtr<IInputPane2> inputPane;
         HRESULT hr = getInputPane(&inputPane);
         if (FAILED(hr))
-            return hr;
+            return S_OK;
         boolean success;
         hr = inputPane->TryShow(&success);
         if (FAILED(hr) || !success)
             qErrnoWarning(hr, "Failed to show input panel.");
-        return hr;
+        return S_OK;
     });
 }
 
@@ -184,12 +184,12 @@ void QWinRTInputContext::hideInputPanel()
         ComPtr<IInputPane2> inputPane;
         HRESULT hr = getInputPane(&inputPane);
         if (FAILED(hr))
-            return hr;
+            return S_OK;
         boolean success;
         hr = inputPane->TryHide(&success);
         if (FAILED(hr) || !success)
             qErrnoWarning(hr, "Failed to hide input panel.");
-        return hr;
+        return S_OK;
     });
 }